CENTURY CITY - JULY 13: Willie Nelson and Richard Dreyfuss attend the Turner National Cable Forum - on July 13, 1990 at the Century Plaza Hotel in Century City, California. (Photo by Joan Adlen/Getty Images) less

CENTURY CITY - JULY 13: Willie Nelson and Richard Dreyfuss attend the Turner National Cable Forum - on July 13, 1990 at the Century Plaza Hotel in Century City, California. (Photo by Joan Adlen/Getty ... more

UNITED STATES - MARCH 01: Robert Duvall, Allan Hubbard and Wille Nelson (Photo by The LIFE Picture Collection/Getty Images)

UNITED STATES - MARCH 01: Robert Duvall, Allan Hubbard and Wille Nelson (Photo by The LIFE Picture Collection/Getty Images)

Photo: Time & Life Pictures, File / Getty

UNITED STATES - MARCH 01: Robert Duvall, Allan Hubbard and Wille... Photo-7893012.108563 - Beaumont Enterprise

Image 13 of 103

Former President Bill Clinton and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premieres on USA Network May 26, 2003 - Show at Beacon Theatre in New York City, New York, United States. (Photo by Theo Wargo/WireImage) less

Former President Bill Clinton and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premieres on USA Network May 26, 2003 - Show at Beacon Theatre in New York City, New York, United States. ... more

Photo: Theo Wargo, File / Getty

Former President Bill Clinton and Willie Nelson during "Willie... Photo-7893013.108563 - Beaumont Enterprise

Image 14 of 103

Keith Richards and Willie Nelson during Willie Nelson and Friends: "Outlaws & Angels" - Show and Backstage at Wiltern Theatre in Los Angeles, California, United States. (Photo by L. Cohen/WireImage for NBC Universal Photo Department) less

Keith Richards and Willie Nelson during Willie Nelson and Friends: "Outlaws & Angels" - Show and Backstage at Wiltern Theatre in Los Angeles, California, United States. (Photo by L. Cohen/WireImage for NBC ... more

Willie Nelson (left) and guest during 39th Annual Academy of Country Music Awards - Backstage and Audience at Mandalay Bay Resort and Casino in Las Vegas, Nevada, United States. (Photo by L. Cohen/WireImage for Bragman Nyman Cafarelli) less

Willie Nelson (left) and guest during 39th Annual Academy of Country Music Awards - Backstage and Audience at Mandalay Bay Resort and Casino in Las Vegas, Nevada, United States. (Photo by L. Cohen/WireImage for ... more

George Strait and Willie Nelson during 39th Annual Academy of Country Music Awards - Backstage and Audience at Mandalay Bay Resort and Casino in Las Vegas, Nevada, United States. (Photo by L. Cohen/WireImage for Bragman Nyman Cafarelli) less

George Strait and Willie Nelson during 39th Annual Academy of Country Music Awards - Backstage and Audience at Mandalay Bay Resort and Casino in Las Vegas, Nevada, United States. (Photo by L. Cohen/WireImage ... more

Willie Nelson and Elvis Costello during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United States. (Photo by Theo Wargo/WireImage) less

Willie Nelson and Elvis Costello during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United ... more

Norah Jones (center) and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United States. (Photo by KMazur/WireImage) less

Norah Jones (center) and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United ... more

Shania Twain and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United States. (Photo by KMazur/WireImage) less

Shania Twain and Willie Nelson during "Willie Nelson and Friends: Live and Kickin'" Premiers on USA Network on May 26, 2003 - Rehearsal and Backstage at Beacon Theatre in New York City, New York, United States. ... more

Paul Williams, Dolly Parton & Willie Nelson during The Songwriters Hall of Fame 32nd Annual Awards Induction at The Sheraton Hotel in New York City, New York, United States. (Photo by KMazur/WireImage)

Paul Williams, Dolly Parton & Willie Nelson during The Songwriters Hall of Fame 32nd Annual Awards Induction at The Sheraton Hotel in New York City, New York, United States. (Photo by KMazur/WireImage)